47171642 has 16 divisors (see below), whose sum is σ = 85122240. Its totient is φ = 19152288.

The previous prime is 47171629. The next prime is 47171671. The reversal of 47171642 is 24617174.

It is a junction number, because it is equal to n+sod(n) for n = 47171599 and 47171608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88403 + ... + 88934.

It is an arithmetic number, because the mean of its divisors is an integer number (5320140).

Almost surely, 2^47171642 is an apocalyptic number.

47171642 is a deficient number, since it is larger than the sum of its proper divisors (37950598).

47171642 is a wasteful number, since it uses less digits than its factorization.

47171642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177365.

The product of its digits is 9408, while the sum is 32.

The square root of 47171642 is about 6868.1614716021. The cubic root of 47171642 is about 361.3213836258.

The spelling of 47171642 in words is "forty-seven million, one hundred seventy-one thousand, six hundred forty-two".